what the hell is a cyclic redundancy check

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dabuddha

Lifer
Apr 10, 2000
19,579
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Originally posted by: Eli
Originally posted by: Legendary
A lot of people don't know what CRC stands for but know what CRC errors are (from unzipping/unraring and the like).
This was my reasoning.

You don't have to play an asshole on the internet, It doesen't make you seem badass. :p

C'mon.

You gotta learn to ignore Tyler. He tends to think he actually has a clue sometimes :) I thought the exact same thing about what you posted.
 

NogginBoink

Diamond Member
Feb 17, 2002
5,322
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Originally posted by: snailophone
Can CRC errors be caused by bad data transfer from the hard drive to the CD burner? The CRC errors I am getting are when I try to retrieve archived data from cdrs (such as .doc or .mp3 files), not from rar or zip files. Perhaps its the super cheap cables I'm using???

Probably not.

When the file is written to CD, a CRC is computed on all of the data in the file, and the calculated CRC is appended to the file and stored with it.

When the file is read from CD, the compuer again calculates a CRC on all of the data in the file. It then computes the calculated CRC against the CRC stored on the media. If they don't match, you know data was garbled.

A good CRC algorithm can be very good at catching data corruption, and many can be implemented with very few processor cycles.